National Science Foundation

Video VH-438

Hydration of Cement

Hydration is the chemical reaction between cement and water that binds the cement, water and aggregate into concrete. The strength of the finished concrete depends on proper and sufficient hydration. This video reviews the mechanics of cement hydration. Of practical interest, are the methods used to control hydration rate in field applications: the effects of time, temperature, cement type, and admixtures on the rate of hydration. Of academic interest, are the techniques used in the laboratory to study hydration: mathematical modeling of cement hydration; measuring the heat generated over time from hydration; methods used to monitor hydration; thermogravimetric analysis and electrical resistance/impedance measurements; study of the fluid properties of concrete and others.

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